scholarly journals Guidelines for external fixation frame rigidity and stresses

1986 ◽  
Vol 4 (1) ◽  
pp. 68-75 ◽  
Author(s):  
R. Huiskes ◽  
E. Y. S. Chao
Keyword(s):  
External Fixation ◽  
Fixation Frame ◽  
Frame Rigidity

scholarly journals Effect of Ring Material and Diameter on Orthopedic Implant Stability: External Fixation in Femur Bone

2018 ◽  
Vol 7 (4.26) ◽  
pp. 190 ◽  
Author(s):  
Nur Fatin Izzati Ibrahim ◽  
Ruslizam Daud ◽  
Muhammad Khairul Ali Hassan ◽  
Noor Ali Hassan ◽  
Noor Alia Md Zain ◽  
...  
Keyword(s):  
External Fixation ◽  
Von Mises Stress ◽  
Axial Stiffness ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Ring Diameter ◽  
The Stability ◽  
Von Mises ◽  
Fixation Frame ◽  
Ring Material

Axial stiffness is the most important factor in stability. It is known that any changes in the diameter of any components of the frame will either increase or decrease the axial stiffness of the fixation. The model of implant and bone will be variety as the variables changes. Current studies states that ring stability are one of the most important factors in ensuring fractured bones to have a successful re-union. In circular external fixation, the stability of the pin-bone interaction is influenced by the stability of the fixation frame where the major component is the rings. The objective is to study the finite element analysis (FEA) of the external fixator assembled in human diaphysis under compression force with different materials of the exoskeleton which are stainless steel, titanium alloy, magnesium alloy and carbon fiber. The results obtained show the mechanical strength of each material where it will be used to compare the value of von-Mises stress, stiffness and total deformation to acquire the best suitable ring diameter and material. Based on the result, as the diameter of the ring increases, the stiffness of the ring will be decreased. 

Stability of ten configurations of the Hoffmann external-fixation frame.

1987 ◽  
Vol 69 (5) ◽  
pp. 734-744 ◽  
Author(s):  
J B Finlay ◽  
T K Moroz ◽  
C H Rorabeck ◽  
J R Davey ◽  
R B Bourne
Keyword(s):  
External Fixation ◽  
Fixation Frame

scholarly journals Correction of a Severe Poliomyelitic Equinocavovarus Foot Using an Adjustable External Fixation Frame

2014 ◽  
Vol 53 (2) ◽  
pp. 235-238 ◽  
Author(s):  
Issei Nomura ◽  
Koji Watanabe ◽  
Hidenori Matsubara ◽  
Hideji Nishida ◽  
Toshiharu Shirai ◽  
...  
Keyword(s):  
External Fixation ◽  
Fixation Frame

Experimental and Clinical Experience with an IM Pin External Skeletal Fixator Tie-in Configuration

1991 ◽  
Vol 4 (03) ◽  
pp. 86-94 ◽  
Author(s):  
T. L. Foutz ◽  
W. G. Keller ◽  
J. Brown ◽  
D. N. Aron
Keyword(s):  
External Fixation ◽  
Clinical Experience ◽  
Fracture Repair ◽  
In Vitro Testing ◽  
The Past ◽  
Lost To Follow Up ◽  
Fixation Frame ◽  
Unconventional Method

SummaryAn intramedullary (IM) pin external skeletal fixator “tie-in” configuration is described, for use as a stabilizing device, in the treatment of fractures of the humerus and femur in the dog and cat. With in vitro testing of the configuration using cadaver bones, more resistance to bending was gained by the tie-in arrangement than was possible with one not tied-in. Forty-one clinical cases documented the use of the tie-in configuration for fracture repair. Twenty-four dogs and 17 cats were treated over the past seven years. Fourteen were used to stabilize fractures of the humerus and 27 for the femur. Migration of the IM pin or external fixation frame was not seen and all of the cases went to bone union. The unconventional method of leaving the IM pin protruding from the skin did not lead to complications. All of the owners, contacted from one to two months after removal of the implants, reported their animals to have excellent or good results. Five animals were lost to follow-up.

External fixation frame extension for pressure sore prevention

Injury ◽  
1998 ◽  
Vol 29 (9) ◽  
pp. 730-731 ◽  
Author(s):  
Alexander Lerner ◽  
Shay Freiman ◽  
Gabriel Nierenberg ◽  
Haim Stein
Keyword(s):  
External Fixation ◽  
Pressure Sore ◽  
Fixation Frame

Structural stiffness of the hoffmann simple anterior tibial external fixation frame

1989 ◽  
Vol 17 (2) ◽  
pp. 127-141 ◽  
Author(s):  
J. Vossoughi ◽  
Y. Youm ◽  
M. Bosse ◽  
A. R. Burgess ◽  
A. Poka
Keyword(s):  
External Fixation ◽  
Structural Stiffness ◽  
Anterior Tibial ◽  
Fixation Frame
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